HOME >> BIOLOGY >> NEWS
New DNA 'fingerprinting' technique separates hemp from marijuana

Using new DNA "fingerprinting" techniques, two University of Minnesota researchers have become the first to unequivocally separate hemp plants from marijuana plants with genetic markers. Hemp, a crop grown for durable fiber and nutritious seed, and marijuana, the most abundant illegal drug of abuse in the United States, both belong to the species Cannabis sativa. They differ in levels of the psychoactive drug tetrahydrocannabinol (THC) but are otherwise difficult to tell apart. The technique holds promise for distinguishing different cultivars (domesticated plant lines) in U.S. criminal cases. It may also prove useful in countries where the cultivation of hemp is permitted but marijuana is illegal, as in Canada and Europe. The work appears in the March issue (volume 51, No. 2) of the Journal of Forensic Science.

The new technique is an improvement on previous means of separating the two types of Cannabis, said author George Weiblen, an assistant professor of plant biology in the university's College of Biological Sciences and College of Food, Agricultural and Natural Resource Sciences. For decades it has been possible to identify THC chemically, but the drug is not present in all plant tissues or throughout a plant's life cycle. And other researchers have found that genetic markers known as "short tandem repeats," which are used to identify individuals in paternity and criminal cases, lack the power to distinguish Cannabis cultivars unequivocally.

In tests with three different cultivars of hemp and one of marijuana, the DNA fingerprints of all the cultivars were distinct and nonoverlapping. Weiblen and Shannon L. Datwyler, a postdoctoral associate who is now on the faculty of California State University, Sacramento, found that the AFLP (amplified fragment length polymorphism) technique generated hundreds of genetic markers that together established separate identities for each of the four cultivars.

"We think this technique has the poten
'"/>

Contact: Mark Cassutt
cassu003@umn.edu
612-624-8038
University of Minnesota
22-Mar-2006


Page: 1 2

Related biology news :

1. Innovative tagging technique may help researchers better protect fish stocks
2. Innovative research technique reveals another natural wonder in Yellowstone Park
3. New techniques redefine assessment of liver disease
4. New technique will produce a better chromosome map
5. Researchers develop technique for bacteria crowd control
6. Bioluminescence at the service of a novel cerebral imaging technique
7. Natural antibiotics yield secrets to atom-level imaging technique
8. New imaging technique tracks traffic patterns of white blood cells
9. Vet College gets grant to develop fish virus diagnostic technique
10. Harvard team creates spray drying technique for TB vaccine
11. Novel laboratory technique nudges genes into activity

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/20/2016)... , Dec. 20, 2016 The rising ... rental and leasing is stoking significant interest in ... frequency technology, Bluetooth low energy (BLE), biometrics and ... the next wave of wireless technologies in the ... system to advanced access systems opens the market ...
(Date:12/16/2016)... , Dec 16, 2016 Research and Markets ... Market - Global Forecast to 2021" report to their offering. ... The biometric ... grow at a CAGR of 14.06% from 2016 to 2021. The ... is projected to reach 854.8 Million by 2021. The growth of ...
(Date:12/15/2016)... 15, 2016 ... Research and Markets has announced the addition of the ... The report forecasts the global military biometrics market to grow ... The report has been prepared based on an in-depth market analysis with ... growth prospects over the coming years. The report also includes a discussion ...
Breaking Biology News(10 mins):
(Date:1/19/2017)... Research and Markets has announced the addition of the ... - Global Opportunity Analysis and Industry Forecast, 2014-2022" report to ... ... to reach $15,737 million by 2022 from $6,521 in 2015, growing ... Omic technologies segment accounted for more than half of the ...
(Date:1/19/2017)... , Jan. 19, 2017 /PRNewswire -- WuXi ... device open-access capability and technology platform, today announced ... leading biology focused preclinical drug discovery contract research ... will become a wholly-owned subsidiary of WuXi, and ... competences and providing greater services. The acquisition will ...
(Date:1/19/2017)... ... January 19, 2017 , ... November Research Group, ... biopharmaceutical and medical device manufacturers and regulators, is proud to announce the worldwide ... email client designed to provide product vigilance departments with the flexibility and ease ...
(Date:1/19/2017)... , Jan. 19, 2017 AquaBounty Technologies, ... on enhancing productivity in aquaculture and a majority-owned subsidiary ... that it has completed the listing of its common ... equity subscription from Intrexon. "AquaBounty,s listing on ... will broaden our exposure to the U.S. markets as ...
Breaking Biology Technology:
Cached News: